Develop Bugs

Rom and kernel help!!!

I'm in a dilemma! For the last week I've been hunting around to find the right combination of Kernels and Roms. Natively I'm a CM ASOP man. But I've tried everything from CM to MIUI to Ava to Mym. None of the roms are giving a decent amount of battery life. I've tried several combinations of Kernels also. My battery life has been as terrible as 3 hours. I'm talking about losing a percent every minute!
I didn't buy an extended battery. But I have tried a brand new regular battery to make sure that I didn't have a bad battery. Both batteries have the same results under all combinations of Kernels and Roms.
I've seen members braggin on having 12 to 18th hours of life under heavy use! How is that possible!? Lol! I know it has to do with device, kernel, rom combinations.
Can the awsome members of the GREAT Xda please help me out? Point me in the right direction. fyi: I have a ver 003 device and also I don't overclock much at all but I underclock to try and save a lil juice!
Thanks in advanced!
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No matter what rom/kernel combination I run I get really ****ty battery life with the stock red HTC battery. For me personally investing the $70 or so for the Seidio extended battery on Amazon was worthwhile. I also purchased their wall charger as well.
I'm not going to blow smoke up your ass and say that the battery last 2 days with heavy use because thats BS. However, with heavy use (running emulators, gmail sync, occasional bluetooth for wii mote, texting, web browsing, etc) I can get through a 9 hour work day with a lil life to spare.

At least go on amazon and get a1800 mah battery. They are cheap but goood.
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I just bought another stock battery and a wall charger, I keep the spare in my wallet and battery life is a non issue now.
Check out batteryboss.org before buying an aftermarket one though, most of them are rips offs.

I'm not sure about rip offs on amazon but certainly ebay..i bought two batteries w/a charger for $25..and a third one since my oem battery took a bath, fully charged.
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I'm going to research some better batteries. I appreciate the intel. But my thing is I know I can get a few more hours of battery time with a simple kernel modification. Loosing 1% a minute is unheard of lol. Like now: I had 100% when I started this reply and I'm officially at 95% as I press Submit lol! Terrible
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DonSolo said:
I'm going to research some better batteries. I appreciate the intel. But my thing is I know I can get a few more hours of battery time with a simple kernel modification. Loosing 1% a minute is unheard of lol. Like now: I had 100% when I started this reply and I'm officially at 95% as I press Submit lol! Terrible
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Click to expand...
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You should see if you can get a replacement battery from sprint. I am using CM7 nightly 24, and can easily sustain 24+ hours with the OEM red battery.
Everyone will have different results even with the same rom/kernel, however the drain that your experiencing does sound like your battery might be going bad.

Khilbron said:
You should see if you can get a replacement battery from sprint. I am using CM7 nightly 24, and can easily sustain 24+ hours with the OEM red battery.
Everyone will have different results even with the same rom/kernel, however the drain that your experiencing does sound like your battery might be going bad.
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I see your stats and that sh*t is wicked! I used CM7 and that one drains the quickest lol.... before I cash out on a new extended battery where's an abundant source of Kernels? I've tried three and I wanted to do a little process of elimination before I pull out my visa lol
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There aren't very many CM7 kernel's available yet, so few that I can't even begin to tell you where to start looking, for Sense roms though, search for Netarchy those kernels work really well.

I see... I appreciate that! Imma give Mym a try with a few of them Kernels. Thanks again for the help
And what exactly is the Kernel that you are using!? Lol
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Honestly, I've found that the right kernel makes the biggest difference and setcpu, juicedefender, etc only make it worse. For me (also 003 hw) kings kernel and htc # 15 uv have been best. I've had great success with azrael and vaelpak roms. Currently on vaelpak with kings # 11 with NO battery saving apps. I get 24 hours with my regular use. Yesterday was very light, I went 24 hours with just under 50% left.
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(btw, that is on a stock battery, approx 5 months old)
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ms79723 said:
AOSP Builds
v7
12/25/10 - SBC for BC's Kernel SBC-bcnice-stable-v7.zip (2.62 MB)
This is what I'm currently using at the moment. So this gets all the updates as of right now.
v8-BETA
12/25/10 - SBC for BC's Kernel SBC-bcnice-stable-v8.zip (2.62 MB)
This is what I've been testing for a while. This build contains auto bump charging based on the voltage as opposed to the full charge method. I don't know how it works on extended batteries yet...but works pretty good on stock batteries. With this, you should have a better chance of picking up the phone at higher voltages.
Check out Savaged-Zen![/CENTER]
Click to expand...
Click to collapse
I flashed the ver 8 with CM6. 1.2. so far I've gotten slightly better battery life. 20 minutes and I'm still on 99%. That's a whole lot better than losing 1% a minute lol! I'm still going to do another exhaustive research to pinpoint the best combination!
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I know you guys said that setcpu can make matters worse. Is it alright if I use it to underclock to 245x245 when the screen is off and if the battery ever goes over 110°F automatically? That's the only profiles i use to help with battery maintenance
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DonSolo said:
I know you guys said that setcpu can make matters worse. Is it alright if I use it to underclock to 245x245 when the screen is off and if the battery ever goes over 110°F automatically? That's the only profiles i use to help with battery maintenance
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Click to collapse
If your still using CM7, it has its own built in setCPU, I have mine set to ondemand 245min, 768max, and sorry for the delayed response, I went to lunch, however the Kernel I am using for my CM7 flash is just the stock kernel that comes with the initial build if CM7.

Khilbron said:
If your still using CM7, it has its own built in setCPU, I have mine set to ondemand 245min, 768max, and sorry for the delayed response, I went to lunch, however the Kernel I am using for my CM7 flash is just the stock kernel that comes with the initial build if CM7.
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OK I gotcha. One last thing and I'm finished bugging lol. I never knew exactly what the preset governors main jobs were and the differences between them. Which one is best for power saving?
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Better battery life out of an extended battery?????

I have an extended battery (2600). I was wondering, what does everyone do to get the most out of their extended battery if you have one? I'm hoping to get tips and or tricks from my fellow EVO users. If you have nothing positive to say, please don't post.. Any help is appreciated.
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Are you rooted?
I use the stock battery on my rooted Evo and it lasts all day.

It really does depend on weather your rooted or not cuz on my stock battery I can go about a day in a half maybe a couple hours less MAYBE but then I have a Seidio 3500 mAh that can go exactly 2 days 1 hour and 38 minutes with heavy heavy use and also on a charge of 93 percent
So again are you rooted?

http://forum.xda-developers.com/showthread.php?t=712990 check that thread, ever since i followed the steps my battery life is so much better. its been off the charger since midnight and i browsed fb for like 30 minutes, texted my wife n browsed the market for a bit and its only down to 89%. btw im using the stock battery.

Concordium said:
Are you rooted?
I use the stock battery on my rooted Evo and it lasts all day.
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yes i am, running Mijah's MERGED along with Golden Monkey 1.1. I get about 6 hours out a stock and about 8 out a 2600.. am i missing something here?

dgomez720 said:
yes i am, running Mijah's MERGED along with Golden Monkey 1.1. I get about 6 hours out a stock and about 8 out a 2600.. am i missing something here?
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Not really lol I think that's pretty good I'm guessing that you got that with moderate/heavy use?
You may wanna give another ROM a shot and see cuz battery life may very between them. As well as kernels.

dzee206 said:
http://forum.xda-developers.com/showthread.php?t=712990 check that thread, ever since i followed the steps my battery life is so much better. its been off the charger since midnight and i browsed fb for like 30 minutes, texted my wife n browsed the market for a bit and its only down to 89%. btw im using the stock battery.
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from what ive read on this, it seems to be likely to work. will give it a try and see what happens.

infamousteeboy said:
Not really lol I think that's pretty good I'm guessing that you got that with moderate/heavy use?
You may wanna give another ROM a shot and see cuz battery life may very between them. As well as kernels.
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actually thats with it just sitting there doing nothing while im working. lol I have ran god knows how many roms all with about the same battery life expectancy except SAV-ZEN which is and always will be my favorite AOSP rom. lol oh well, ill give swapping roms another go, thanks man.

Originally Posted by infamousteeboy
Not really lol I think that's pretty good I'm guessing that you got that with moderate/heavy use?
You may wanna give another ROM a shot and see cuz battery life may very between them. As well as kernels.
Click to expand...
Click to collapse
actually thats with it just sitting there doing nothing while im working. lol I have ran god knows how many roms all with about the same battery life expectancy except SAV-ZEN which is and always will be my favorite AOSP rom. lol oh well, ill give swapping roms another go, thanks man.
Click to expand...
Click to collapse
Try Xplod RC1

infamousteeboy said:
Try Xplod RC1
Click to expand...
Click to collapse
Will give that one a go. I dled it a few days ago but i accidentally deactivated my EVO lol luckily i unrooted it and got it back to root just now so im going to give that one a go

Any stock kernel will not charge any extended battert correctly. I experimented with this for the last month.
I found an app called boot manager and now have 4 roms installed on my phone. At night I boot into a Froyo ROM with a SBC kernel and charge it, then in the am, boot into my Gingerbread ROM.
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dgomez720 said:
yes i am, running Mijah's MERGED along with Golden Monkey 1.1. I get about 6 hours out a stock and about 8 out a 2600.. am i missing something here?
Click to expand...
Click to collapse
Yep. If I don't use my phone it will last all day and lose about 1.5% every two hours. I just recently switched to my current setup and am still not used to it. I'll unplug my phone at ~95% and head out the door. I'll pull it out of my pocket a number of hours later and see that it's only down to about 93% - 92%. Before I switched my setup I would've been down the low 80's if not lower. When I use it my battery depends on what I am doing with it and what I have my scaling set to. Using my phone for things like texting, facebook, email, and some web browsing on Skyfire, which is what I would consider heavy use, it goes down about 3.5% per hour. Yesterday I went to my little niece's dance class and I used my phone to record video of her entire 60 minute dance class. Battery went down about 30% percent from that but that's to be expected. I remained out of the house for another 8 hours after her class and my phone still had 50% battery left by the time I got home. Wireless tether eats up my battery. But Thats because I am usually tethering while texting and testing launchers and such on my phone.
I do all of this on a stock battery. So I can only imagine how much I'd be able to do with an extended battery.

I get 30+ hours on my extended battery 2600 from sprint. LOL on warm 2.2
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wetrabbit444 said:
I get 30+ hours on my extended battery 2600 from sprint. LOL on warm 2.2
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see i ran WTPT for a long time because i loved the stability of it as well as the awesome batteyr life of it along with the option to SBC on the fly like SAV-ZEN. I'm not going to lie though, I love the GB's along with the carousel LMAO! X) i bet thats whats eating away at my battery lol

Serious question.. regarding EVO batt life

So not here to stir up this post with heresay and sayso facts or not facts... But this is my 5 th EVO since released goin.. back and forth.. I was just curious if anyone knows of a fix to the teribble batt life.. goin on over a yr now...since released..and all the trial and error ... Talk on flahing kernels ..certain roms.. extended batterys.. even partitioning SD cards..
Now there's threads on latest OTA KERNEL including first real trickle charge on the device ...
So are they're any good fixes /links /ideas that cure the issue ..etc.. such as Rom/ kernel combo ? Anything
Besides relying on extended batt
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I usually turn my data off if I'm not browsing the web or XDA which saves battery tremendously
TrevE Supporter!

viperMOD
lojak29 said:
So not here to stir up this post with heresay and sayso facts or not facts... But this is my 5 th EVO since released goin.. back and forth.. I was just curious if anyone knows of a fix to the teribble batt life.. goin on over a yr now...since released..and all the trial and error ... Talk on flahing kernels ..certain roms.. extended batterys.. even partitioning SD cards..
Now there's threads on latest OTA KERNEL including first real trickle charge on the device ...
So are they're any good fixes /links /ideas that cure the issue ..etc.. such as Rom/ kernel combo ? Anything
Besides relying on extended batt
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Click to expand...
Click to collapse
You should probably look into viperMOD. You can undervolt most AOSP kernels to save some battery but sacrifice a little performance. I actively use this mod and I must say it does save a tremendous amount of battery.

infamousteeboy said:
I usually turn my data off if I'm not browsing the web or XDA which saves battery tremendously
TrevE Supporter!
Click to expand...
Click to collapse
That makes all the difference in the world
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I mean, it all depends on how much you use your phone, and what you use it for. I keep my 3g on all day long, and using MikG I can easily go 2 days without charging. Before gingerbread, I was using Myn's 2.2, and I could easily go 3 days without charging.

My setup lasts all day without needing to recharge. And I don't have to turn off my data either. Flash various ROM/kernel combos, calibrate your battery, modify how often your widgets and services update, adjust display brightness, don't let erroneous apps run in the background, etc. Doing that to make sure your phone is setup properly has the single biggest impact on your battery life.
After you do that then you can start fine tuning with things like turning off your data/GPS service, using vipermod, undervolting, etc. in order to get even more life from your battery.

Juice defender?

So does juice defender actually do anything special to make you battery life better? Or is it just an app for the "lazy" if you will.
Does it do special things or does it just shut off radios and whatnot when your not using them?
I'm pretty good about shutting off radios and dimming brightness when needed and get 15 hours easy on stock battery so I don't necessary need it but its always kinda made me wonder...
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Just my opinion, but with the advances in Kernels and other features, either built into ROMs (AOSP and Sense) or applied separately, and their progression over time I have felt that separate battery saving programs are a thing of the past.
Extended batteries have assisted in this need to feed our EVOs also.

devnulldroid said:
Just my opinion, but with the advances in Kernels and other features, either built into ROMs (AOSP and Sense) or applied separately, and their progression over time I have felt that separate battery saving programs are a thing of the past.
Extended batteries have assisted in this need to feed our EVOs also.
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Click to collapse
I totally agree and have noticed much the same.
My battery life is far better using CM7 and the SavagedZen kernel that it ever was with Juice Defender back in the day.

So awesome of you guys to reply to the op and give your opinion on today's kernels and not answer the question at hand in any way shape or form lol ;p
Juice defender doesn't do anything that the knowledgeable phone owner already does for battery saving.
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i agree. upgrade kernal and ROM to really save on battery. i have an original june 2010 evo and just finally ordered a replacement battery.

THREESTRIPEBRAND said:
So awesome of you guys to reply to the op and give your opinion on today's kernels and not answer the question at hand in any way shape or form lol ;p
Juice defender doesn't do anything that the knowledgeable phone owner already does for battery saving.
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Ok.. direct and to the point.. I usually try to not bad mouth software openly, but since called out, every battery optimizer I have ever used, even juice defender sucked and did nothing.
Same thing for memory optimizers, cache cleaners and other "snake oil" software/code/scripts.... on any platform, computer or phone. That better

devnulldroid said:
Ok.. direct and to the point.. I usually try to not bad mouth software openly, but since called out, every battery optimizer I have ever used, even juice defender sucked and did nothing.
Same thing for memory optimizers, cache cleaners and other "snake oil" software/code/scripts.... on any platform, computer or phone. That better
Click to expand...
Click to collapse
A program that automatically turns off EVDO, wifi, etc most certainly saves a significant amount of battery life... if you think turning your phones EVDO radio off is "snake oil" then you're pretty damn incorrect. Leaving my phone on EVDO all the time it'll get a few days of battery life idle, vs several weeks of battery life with a strict tuned JuiceDefender setup.
Sent from my Transformer TF101

THREESTRIPEBRAND said:
So awesome of you guys to reply to the op and give your opinion on today's kernels and not answer the question at hand in any way shape or form lol ;p
Juice defender doesn't do anything that the knowledgeable phone owner already does for battery saving.
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Click to expand...
Click to collapse
Thank you. Direct and to the point. Answered my question
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Yeah, I used juice defender and it honestly saved a little battery nothing substantial but getting emails and things late because its killing my data when screen is off not worth it, so no it doesn't truly save battery. Its just more of a tool to control when your data is on and off..

[Q] What are you currently doing to increase battery life?

We all know our GS2 runs out of Battery at a faster rate than what we would like! I'm just curious, what steps do You take to increase battery life, if any.
-Do you use certain apps?
-Do you enable/disable certain things and certain times?
-Anything, ever the smallest things you do, I would like to know!
I'm just curious to see what different people do to strengthen their battery.
(Also, if you could, please just post what ROM you're running on too) Thanks!

I use developer options and limit the apps to 4. I also under clock to 200. Stock rom.
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Shader-LXIX said:
I use developer options and limit the apps to 4. I also under clock to 200. Stock rom.
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Click to collapse
lol! 200?!?!

i run cm10 and I really don't do anything but dim my screen most of the time.

Battery Life
Im running FK23 leaked rooted with stock kernel. I use powersave mode that comes in stock settings app.
I don't limit cpu. I use phone to txt, play games, youtube, facebook, twitter, and instagram and google play store.
I get around 14+ hours usage.
Also, I try to use WIFI whenever I can. I turn off GPS when not needed. I dont use 4G often as 3G is pretty good on FK23.
Lasts me from 7:45AM to 10:27PM as of now on 1%.

Wow, and how much do you use you're phone throughout the day? I'm just looking for new ideas because I do several things to increase my battery length, but I find myself around 50% in the first 2-3 hours of my 11 hour day. :/
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DustCrow said:
Wow, and how much do you use you're phone throughout the day? I'm just looking for new ideas because I do several things to increase my battery length, but I find myself around 50% in the first 2-3 hours of my 11 hour day. :/
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Click to collapse
I bought a cheap ($10) extended battery and cover, and a cheap ($9) TPU case/ At 14 hours, I still had 61% battery left. I can get a full legitimate day out of it running 2.3's, but I am going to try JB and ICS again and see where it's at.

I run KingKang with the JB tweaks package. I also modified my build.prop for both performance and battery life. Plus I toggle my 3G on only when I need it. If I have a WiFi signal I'll do the same with that. I average 17 hours but sometimes I get more than 24. Inverted apps not only look great, but help with battery too.
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Honestly? #1 thing I do is stay on wi-fi as much as possible. Have gone almost 24 hours if I keep off 3G/4G and moderately use the phone/'net.

Where did you purchase the battery, and how much stronger is it? Also, what kind of case did you get, one that chargers your phone?
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DustCrow said:
Where did you purchase the battery, and how much stronger is it? Also, what kind of case did you get, one that chargers your phone?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Just bought the cheapest 3500 mah battery with a back plate on Amazon, then the ONLY extended tpu case made by trexcell on Ebay. 20 bucks and I leave wifi gps and everything I use on all day long.
Epic4GT with different ROMs every few days. Thanks Devs!

DustCrow said:
We all know our GS2 runs out of Battery at a faster rate than what we would like! I'm just curious, what steps do You take to increase battery life, if any.
-Do you use certain apps?
-Do you enable/disable certain things and certain times?
-Anything, ever the smallest things you do, I would like to know!
I'm just curious to see what different people do to strengthen their battery.
(Also, if you could, please just post what ROM you're running on too) Thanks!
Click to expand...
Click to collapse
I switched back to Calkulin 3.0. Battery issues solved.
I tried to make ICS work for a couple months, but grew to hate the phone. It's a much better phone when it runs Gingerbread.

MoMatt said:
I switched back to Calkulin 3.0. Battery issues solved.
I tried to make ICS work for a couple months, but grew to hate the phone. It's a much better phone when it runs Gingerbread.
Click to expand...
Click to collapse
I did the same as you until the fk23 leak came out. Calkulin's v3.0 gb is amazing for battery life, smoothness, and functionality. I was never fully satisfied with any of the ics solutions, stock or custom.
Although the fk23 battery life isnt as good as calkulin, I'm still using it as my daily driver bc it's jellybean and cool, the phone runs well and smooth, and battery is good enough for me.
To answer the op's question, I do the following to help extend my battery life:
1. Leave off all data unless I need to use it (3g, 4g, wifi).
2. Turn of autosync and only sync as needed.
3. Remove bloatware and/or freeze any unnecessary apps (use GSM battery and OS monitor to find battery hog apps).
4. Leave off GPS unless needed.
5. Set screen brightness lower.

Here's a link to my FK23 results over in the battery thread in General:
http://forum.xda-developers.com/showpost.php?p=34924972&postcount=534
I've only owned this phone since after the ICS update, so never tried any GB ROM.
The ICS ROM I've had the most success with is Re-Calked, but FK23 takes it just a step further for me. I know some people have been reporting issues with FK23, but for me it has been rock solid and has been my DD for nearly a week now.
Blu Kuban also did well with battery life, but it is a little over-customized for my liking. I also had some stability issues with BK. I used sleshpics M'ICS build for a while too ... again, over customized for my liking. Good performance and relatively stable. Also, I have never been able to get 4G speeds on any other ROM/kernel like I'm seeing now.
If I'm in an area with a strong cellular signal, I can get over 24h with 3h+ screen time both on and off WiFi. If the cell signal is week, I burn from 5-7%/h so maybe 15-16h if I was there all day ... but that would obv. improve if I threw it into airplane mode.
I have frozen all of the bloatware apps, don't have Google Now activated. Other than that, I allow syncing to occur per default. I don't have FB app installed.
I use auto-brightness most of the time, and I have a dark wallpaper.

dim screen. stay on wifi. that is all.

Honestly, getting use to a dimmed screen made a HUGE difference!!

Is there ever a time when its better to not be on WiFi, of a WiFi is available?
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DustCrow said:
Is there ever a time when its better to not be on WiFi, of a WiFi is available?
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Click to expand...
Click to collapse
I have had huge battery drain while being on wifi when availible 100% of the time I only use wifi when I need a faster connection

DustCrow said:
Wow, and how much do you use you're phone throughout the day? I'm just looking for new ideas because I do several things to increase my battery length, but I find myself around 50% in the first 2-3 hours of my 11 hour day. :/
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Surprisingly i use my phone alot for twitter, facebook, and texting.
And i still get around the time i wake up till the time i sleep!

undervolt cpu and gpu
max freq 1000
pegasus q governor